The ANPA AP-4820GI is a galvanically isolated PoE splitter that converts 48V 802.3af/at PoE into DC 12V at 2A (24W) while electrically isolating the powered device from the PoE source. Isolation eliminates ground-loop interference, protects sensitive equipment and improves reliability in installations spanning different power systems — such as buildings, industrial sites and camera networks sharing mixed earthing. It is the safety-conscious choice for powering 12V cameras and APs over PoE. Request a quote for volume and OEM/ODM terms.
ANPA sells factory-direct with wholesale and OEM/ODM terms. Pricing is quoted per project — contact our sales team for volume discounts and lead times.
| Model | AP-4820GI |
|---|---|
| Category | POE Switch Accessories |
| Ports Configuration | 1 in 1 out |
| Transmission Rate | 10/100Mbps |
| PoE Standard | IEEE 802.3af/at |
| Power Budget | 24W |
| Key Features | Isolated |
| MOQ | 2 pieces |
Product Overview
Like all splitters, the AP-4820GI takes 48V PoE from an 802.3af/at switch on one cable and delivers 12V DC at 2A (24W) plus data to a non-PoE device. Its key distinction is galvanic isolation: the input and output circuits are electrically separated, so there is no direct conductive path between the PoE source and the powered device. That blocks ground-loop currents that otherwise cause video hum, data errors and, in the worst case, equipment damage across sites with differing ground potentials.
This matters most in real-world projects: a camera powered from one building’s system and networked to a recorder on another, outdoor devices struck by induced surges, and industrial floors with heavy machinery all create potential differences across cable runs. The isolated splitter breaks that loop while still delivering regulated 12V power and the 10/100Mbps data link. It is the recommended splitter for sensitive camera installations and anything exposed to electrical noise.
Setup stays plug-and-play: one Cat5e/Cat6 run from the PoE switch, with data and 12V leads to the device. Power is sourced centrally at the switch (UPS-backed), and the unit provides over-current and short-circuit protection. Where isolation is not required, the non-isolated AP-4825S offers a higher 30W output; the AP-4820GI prioritizes isolation and reliability at 24W.
Every AP-4820GI is CE, FCC and RoHS certified and leaves ANPA’s Chaozhou factory after the 9-step quality control process and 100% inspection.
Application Scenarios
Ground-Loop-Free Camera Networks
Cameras and recorders on different power systems often suffer ground-loop interference. The isolated splitter breaks the loop for clean video and stable links.
Multi-Building & Outdoor Links
Devices in separate buildings or outdoors face induced surges and differing ground potential; isolation protects the equipment and stabilizes the connection.
Industrial & Electrically Noisy Sites
Factories and plants with heavy machinery generate noise on cable shields; galvanic isolation keeps data and power reliable.
12V Cameras & APs on PoE Infrastructure
Standard 12V devices run from a PoE switch without local adapters, adding isolation safety for sensitive deployments.
Why Choose ANPA
ANPA has manufactured PoE networking equipment since 2006 — 20 years of production experience. Every switch and accessory is built in our single 15,000 m² facility in Chaozhou, Guangdong (with a dedicated R&D center in Shenzhen), across 8 production lines and 16 sets of assembly and test equipment. Our 3 R&D engineers and 7 QA/QC specialists enforce a rigorous 9-step quality control process with 100% inspection, full-load burn-in and CE, FCC and RoHS certification on every batch.
- Galvanic isolation eliminates ground loops, hum and surge damage.
- 48V 802.3af/at PoE to regulated 12V 2A (24W) plus data.
- Protects sensitive cameras and APs across mixed-ground sites.
- Plug-and-play, single-cable, UPS-backed 10/100Mbps operation.
- CE/FCC/RoHS certified; 100% inspection at ANPA’s Chaozhou facility.
Compatible & Related Products
Deploy the AP-4820GI with any 802.3af/at switch — camera networks commonly use the AP-1028KE, AP-10216KE or gigabit AP-3038GE. Need 30W rather than isolation? Choose the AP-4825S; for outdoor waterproof 48V splitting see the AP-4820S; for long or lightning-prone links, fiber media conversion via the AP-3102AB-SC provides full electrical separation.
Frequently Asked Questions
1. What is an isolated PoE splitter?
It converts PoE to data + DC power just like a standard splitter, but the input (PoE) and output (device) circuits are galvanically isolated — no direct electrical path. This blocks ground-loop currents and protects equipment across differing ground potentials.
2. Why do I need isolation?
When the PoE source and device sit on different electrical systems or grounds — common in multi-building, outdoor and industrial sites — ground loops can cause interference, data errors or damage. Isolation eliminates the loop.
3. What output does the AP-4820GI provide?
It outputs regulated DC 12V at 2A (24W) plus the 10/100Mbps data connection, from a 48V IEEE 802.3af/at PoE input.
4. Isolated vs non-isolated splitter — which do I need?
Choose the isolated AP-4820GI for sensitive devices, mixed-ground sites, outdoors and noisy environments. Choose the non-isolated AP-4825S when you need its higher 30W output and the installation is a single, common-ground environment.
5. Does it work with any PoE switch?
Yes. It accepts standard IEEE 802.3af/at PoE at 10/100Mbps from any compliant switch or injector.
6. Does the device need its own power outlet?
No. Power arrives over the Ethernet cable from the PoE switch, so the device location needs only the cable — and the switch can sit on a UPS for backup.
7. Can ANPA supply isolated splitters under OEM?
Yes. The AP-4820GI is manufactured in-house with custom logo, packaging and documentation at an MOQ of 2 pieces. Contact us for a project quote.
Get a Quote from the Manufacturer
Ready to specify the AP-4820GI for your project? ANPA ships factory-direct worldwide with flexible MOQs, OEM/ODM customization and CE/FCC/RoHS documentation. Tell us your port count, power and quantity requirements and our team will reply with pricing and lead time.
ANPA sells factory-direct with wholesale and OEM/ODM terms. Pricing is quoted per project — contact our sales team for volume discounts and lead times.